11 cm of tumor - liver cirrhosis

My dad is 80 years old. Preexisting condition: Weak heart and mild bronchitis. Accidentally discovered lump in his liver caused due to Hep B. He has no symptoms beside loss of appetite but that happened due to his heart condition. 10 millions + count, he has 10-11 cm size of tumor. Is it possible the size could be less and there is swelling around it adding to size? He had his endoscopy and CT Scan. Surgery or transplant is ruled out due to age. 40% of his liver is working. What is best way to stop further spread? any help is appreciated.